Journal-bearing.



H. F. SCHRDER.

JOURNAL BEARING.

APPLIGATION FILED 13130.17, 1910.

Patented Nov. 10, 1914.

wmp/556.5

7 which extends transversely of the brass and which gradually decreasein depth as they extend outward from the central cavity. The brass maybe further cut away at each end, as indicated at 8, 8. By suchconstruction l provide a brass having a cylindrical bore provided withsuitable cavities at points which do not materially weaken the brass andwhich is free from any longitudinally extending ribs or cavities.

rlhe convex surface of the lining shell has a shape which will adapt itto snugly iit the concave surface of the main shell. rlhus the convexside of the lining shell is provided with two central rectangular lugs9, 9 adapted to ht in the cavities 6, 6, and with lateral ribs 10, 10extending` from the lugs 9 transversely of the lining shell. it each ofits ends the lining shell is provided with end ribs 11, 1l adapted totit in the cutaway portions 8, 8 at the ends of the main shell. ifdesired, the ends of the main shell may also be notched as indicated at12, 13 in Figs. 7 and 8, in which case the ribs 11 are provided withlugs 1i). and 13'l which lit in said notches. By such construction thelining shell is iirmly held in the main shell and cannot be displaced bytorsional strain. lnstead of a construction which provides the notches12 and the lugs 12a fitting therein, or as additional to such structure,the inner face of the main shell may be provided at its ends with aseries of teats 14, the lining shell being provided with cavities forreceiving said teats. Such teats also serve to take up the end thrustexerted on the lining shell by the car axle. Each of the lugs 9 isprovided with a pocket 15 which opens on the bearing face of the liningat the crown thereof. Themouth of said pockets is'preferably providedwith a grating 16. Lon itudinally of each of the ribs 10 and exten 1ngthrough the lining shell is a lubricating hole 1 7, which thus extendsfrom one side of the bearing to said pocket. The hole 17 thus extendsfrom the side of the bearing at which place the lubricant tends toaccumulate to the crown of the bearing, where, by

reason of the great pressure exerted between the bearing and its journalthere is a tendency of the lubricant to fail to penetrate. The holesare'preferably tangential of the journal 4 and of the inner curvature ofthe lining 2 and extend from the point in the side of the lining atwhich pressure begins t0 be exerted between the bearing and the journalthrou h the lining to the ockets 15.

As .is wellnown, by\reason o the pressure between the journal anditsbearin the lubricant accumulates in longitudinal heads at the sides ofthe bearing and fails to penetrate to the crown thereof. The rotarymotion of the journal 4 exerts a centrifugal action u on the lubricant,and, by providing the lubricating holes as above described, the

inattesa lubricant is pum ed or forced, as it were, up through the hoes17 into the pockets 15, which pockets are thus kept iilled with thelubricant under pressure. lt is also apparent that as the lubricant isthus forced from the pockets 15 onto the upper surface of the journal4l, such feed of the oil will also produce a suction in the pockets 15which will assist the feeding of oil thereto through the lubricatingholes 17. ln order that the greatest advantage may be derived from' suchsuction it is, of course, desirable that the holes 17 and the pockets 15be air-tight. lt is with such end in view that the hole 1.7 extendspreferably through the lining. It is obvious that by reason of the great`extent of the meeting faces of the shell and its lining and the closefit thereof, the pockets 15 are made air-tight. Furthermore the oilwhich will work its way in between the shell and the lining willl assistin excluding the air from the pocket.

From the foregoing it will be understood that my invention, as appliedto the lubritaticn of'journal bearings for railway-cars, depends uponthe rotary motion of the journal forcing the lubricant through holesfrom the point where'the lubricant tends to accumulate to a point wheregreat pressure is exerted between the journal and its bearing. lt willbe understood that a suiiicient number of these lubricating holes 17 maybe provided to keep the pockets 15 well filled with oil, and that such anumber of the pockets may be providedv as may be deemed necessary to roerly distribute the lubricant. It will urt er be understood that whilethe particular structure of the j meeting surfaces of the shell liningare such as to peculiarly adapt themselves to the lubricatmg features ofmy invention,- that such structure is also of importance and valueirrespective ofthe lubricatin means employed in conjunction therewitsuch structure providing a journal bearing peculiarly adapted towithstand the severe usage to which it is subjected.

Having thus'described my invention, what I claim is 1.' In a compositejournal bearing, the combination with a main shell of hard metal havingin its inner face a .central cavity, and a lateral transverselyextendinfr cavity' communicating with said centra cavity; of anauxiliary, removable lining shell of suitable anti-friction metal havina lug fitting in the central cavity of sai main shell and a transverserib fitting in the transversely extending cavity, said lug beingprovided with a pocket o ening on the bearing face of said linin s ell,and said linin shell being provi ed with a hole therein longitudinallyof said rib, said hole extending from the bearing face ofr said liningshell to said pocket.

tirata 2. lnJ a composite journal bearing, the combination with a mainshell of hard metal having central cavities in its inner lace, of anauxiliary,removable lining shell oi suitable antilriction metal havinglugs tting in said cavities, said lugs beingeach provided with a pocketopening on the bearing surface oi said lining shell, andl said liningshellbeing further provided with lubricatin holes extendingtherethrough,

'said lu ricating holes being constructed and arranged to feed lubricantfrom the sides of said 'lining shell to said pockets.

3. ln a composite journaly bearing, the

combination with al main shell of hard metal having in each end of itsinner face a central cavity and two lateral, transversely extendingcavities communicating with the opposite sides of the central cavity, 0fan auxiliary, removable lining shell of suitable antifriction metalhaving lugs and ribs ii'tting in the corresponding central cavities andlateral cavities, respectively, of said main shell, said lugs beingeachprovided with apocket opening on the bearing surface of said liningshell, and said ribs being each provided with a lubricating holeextending from one side of the lining shell longitudinally of said ribsand communicating with the lcorresptmding pocket.

d. In a composite journal' bearing, the combination with a main shellvof hard metal having in each end of its inner face a central,rectangular cavity and two lateral transversely extending cavitiescommunieating with the opposite sides of the central cavity; of anauxiliary, removable lining shell of suitable antifriction metal havingrectangular lugs fitting in the correspondtransverse ribs fitting in thecorresponding transversely extending cavities, sa-id lugs tending fromthe bearing faces of said lining shell to said pockets.

4ing central cavities in said main shell and i 5. ln a composite journalbearing, the

combination with a main shell of hardinetal having in its inner face acentral cavity and two lateral transversely extending Vcavitiescommunicating with the opposite side of the central cavity; ofanauxiliary, removable `lining shell of suitable antifriction metalhaving lugs itting in the central cavities in sai-d main shell andtransverse ribs fitting in the corresponding transversely extendingvcavities, said lug being provided with a pocket opening'on the bearingface of said lining shell, said lining shell being further provided withholes vtherein longitudinally of said ribs, said holes extending from'the bearing faces of said lining shell to said pocket.

In witness whereof, I hereunto subscribe my naine this fifteenth day ofDecember,

A. ni, 1910.

HERMAN F. soHRoDER.

Witnesses:

GEORGE E. FOLK, ALFRED'H. MOORE.

